Your Neighbor's Dead Tree Is Leaning Over Your House: The Documentation That Protects You

A dead ash leaning over your garage is not just a worry, it's a liability question — and the answer to that question depends almost entirely on what you can prove was known, and when.

General information for Minnesota homeowners, not legal advice. For a live dispute, talk to an attorney.

Why documentation is the whole game

When a healthy tree falls in a storm, it's generally nobody's fault and each owner's policy handles their own property. When a visibly hazardous tree falls, the owner's failure to act can shift responsibility to them.

The dividing line is notice: did the owner know, or should they reasonably have known? An owner who received a dated letter with photographs and an arborist's assessment nine months ago cannot credibly claim they had no idea. That is the entire purpose of the process below.

Step 1 — Photograph it properly, today

Date-stamped photos, taken from several angles:

• The whole tree, with your house or garage in the same frame to show the target.
• The base and root flare — look for cracked, mounded or lifting soil.
• Any trunk cracks, cavities, hollows or old wounds.
• Shelf fungus or mushrooms on the trunk or roots.
• Dead limbs in the canopy, and any bare canopy in the middle of summer.
• For ash: D-shaped exit holes, bark flecking from woodpeckers, thinning from the top down.

Not sure what you're looking at? Run our free tree risk checklist and save the result — it timestamps your concern in plain language.

Step 2 — Talk to the neighbor first

Most of these resolve in one conversation. Many owners genuinely have not looked at the back of their own tree in years, and a fair number are relieved someone raised it. Lead with the tree, not with liability.

Step 3 — Get a written arborist assessment

An assessment from a professional turns your opinion into evidence. It documents specific defects, the likelihood of failure, and what the target is. It also tells you whether the honest answer is removal, or whether crown reduction and cabling would resolve it — which is a much easier ask of a neighbor who does not want to lose their tree.

We do these free across the Twin Cities metro.

Step 4 — Send written notice and keep a copy

If conversation doesn't move it, write a short, unemotional letter:

• The date.
• The specific tree and its location.
• The specific defects you observed, and the arborist's findings if you have them.
• What is at risk — house, garage, driveway, the spot the kids play.
• A clear request that they have it evaluated and addressed.
• Photos attached.

Send it in a way that creates a record, keep a copy, and note the date. Certified mail is the traditional route; email works too as long as you keep it. Do not threaten and do not editorialize — a calm factual letter reads far better later than an angry one.

Step 5 — Notify your own insurer

Tell your agent in writing that you've identified a hazard on the adjoining property and have given notice. It goes in your file, and it is helpful if a claim ever follows.

Step 6 — Escalate to the city

Many Twin Cities communities have a nuisance or hazardous-tree ordinance and will inspect a dead or dangerous tree on private property, especially where it threatens a right-of-way, a sidewalk or a neighboring structure. Cities with active oak wilt and emerald ash borer programs often have authority to order removal on a deadline.

Call the city forester or the code enforcement desk. Start with our permit and city guides to find the right department.

What not to do

• Don't cut a tree you don't own, past your property line — even a dead one. That's a separate liability with real damages.
• Don't poison or drill it. It happens, it's obvious to an arborist, and it goes very badly.
• Don't just wait. In Minnesota the failure event is a wet snow load or a saturated-soil windstorm, and both arrive on a schedule.

Free hazard assessment

We'll look at the tree, tell you honestly whether it's a hazard or just ugly, and give you a written assessment you can hand to your neighbor or the city. No charge, anywhere in the metro — 612-400-8036.